> >On 12 May 2010 19:18, <hxie at umn.edu> wrote: >> Hi, >> >> If I use MatCopy to get a new matrix, can i use MatSetValues to change >> some >> entries of that matrix and do the assemble after that? Or if I just >> need to >> change some diagonal entries, can I use MatDiagonalSet to change the >> entries >> without assembling? Thanks. >> > >Yes and Yes.
The first way does no work. I will try the second way. > > >
